Infant bath tub



FIG. 1 is a top view of an infant bath tub of our new design;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an upper perspective view thereof;

FIG. 5 is a lower perspective view thereof; and,

FIG. 6 is a side cross-section view at 6-6 in FIG. 1 thereof.

The broken lines shown in the drawings represent environmental structure in FIGS. 1-6 that form no part of the claimed design. 

CLAIM The ornamental design for an infant bath tub, as shown and described. 